Download JANUARY 2015

COVER
FEATUREARTICLES
Organic-transistor-based MPU
runs at 2 kHz;
ROM-coded by ink-jet
R
esearchers at imec have produced an
8-bit microprocessor that runs at 2.1 kHz.
That is not a typing error for GHz; 2.1 kHz is a
breakthrough speed in this instance because
the transistors that make up the processor’s
logic are entirely fabricated in low-temperature organic materials. Possible areas of application include high-volume printing of RFID
tags.
Belgium’s Holst Centre, imec and their partner Evonik have fabricated a general-purpose
8-bit microprocessor using complementary
thin-film transistors (TFTs) processed at
temperatures up to 250°C, compatible with
plastic foil substrates. The microprocessor
consists of two separate chips: a processor
core chip and a general-purpose instruction
generator (P2ROM). For the processor core
chip, a complementary hybrid organic-oxide
technology was used (p:n ratio 3:1). The general-purpose instruction generator or P2ROM
is a one-time programmable ROM memory
configured by means of inkjet printing, using a
conductive silver ink.
Complete
article, here
2
EDN Europe | JANUARY 2015
EDN's columns
12 D
esign tips for an efficient noninverting buck-boost converter
by Haifeng Fan, Texas Instruments
3 E
DN.comment
Glimpses of the future leave room
for surprises
15 D
esigning JESD204B converter
systems for low BER, Part 2
by Jeffrey Ugalde & Ian Beavers,
Analog Devices
14 A
nalog Tips
A 15-W precision difference
amplifier with thermal shutdown
by Chau Tran, Analog Devices
17 H
ow to measure capacity versus bias
voltage on MLCCs
by Fons Janssen, Maxim Integrated
20 P
recise wireless temperature sensor
powers itself
By Kris Lokere, Linear Technology
Online this month;
GaN: The dawn of a new era?
By Janine Love, EDN
Embedded security rises and falls with
crypto key management
by Stephen Evanczuk, EDN
Death to "half-power handsets"
by Jeremy Hendy, Nujira
19 T
eardown
A tale of two thermostats: Nest
teardown
by Richard Quinnell, EDN
31 R
eview
Tektronix RSA306 spectrum
analyser
by Kenneth Wyatt
26 P
roduct Roundup
Power switch with current
sensing; low-power FRAM; HMI
modules with touch; cute cases
for Raspberry Pi
21 D
esign Ideas
22 T
hree-op-amp state-variable filter
perfects the notch
24 S
eries-connected MOSFETs
increase voltage & power
handling
5 Pulse
www.edn-europe.com